Tire-upsetting machine



UNITED STATES PATENT OFFICE.

HIRAM L. HOVARD, OF MENDON, MICHIGAN.

TIRE-UPSETTING MACHINE.

Specification forming part of Letters Patent No. 5l,456, dated December12, 1865.

To all whom it may concern Beit known that I, HIRAM L. HOWARD, of thevillage of Meudon, in the county of St. Joseph and State of Michigan,have invented a new and useful Improvement in rlire-Upsetting Machines;and I do hereby declare that the following is a full, clear, and exactdescription of the same, reference being had to the annexeddrawings,inaking a part of this speci fication, in which- Figure l is avertical longitudinal section Fig. 2, a plan or top view of the machine.

Similar letters of reference indicate corresponding parts in bothfigures.

My invention consists of apeculiar arrangement of the clamping andupsetting jaws in relation to each other and to the operating device, bywhich important advantages are obtained in this class of machines, to bemore fully explained hereinafter; and the better to enable othersskilled in the art to construct and use my invention, I will now proceedmore fully to describe it. i

A represents a stationary and B a movable castiron block or jaw, on theconcave upper surfaces of which the wheel-tire to be upsetis bedded andclamped The jaw A is usually constructed with ears or flanges e, whichare let into the bench-plank C, and are firmly bolted to it. The slidingjaw B is also sunk an equal distance into the plank G, in line andparallel with the jaw A, but with sufficient freedom to allow it toslide horizontally back and forth. To receive the tire, a groove, G, isformed in the upper side of each jaw, on one side of which groove aserrated dog, D, is inserted, against which dog (or, more properly,stud) the wagon or other wheel tir'e is lirmly clamped, previous toupsetting, by driving down the clamping-keys, I I, one of which passesthrough each jaw immediately opposite, the jaws being so formed at suchpoints and so enlarged as to confer the necessary degree of strength toresist the clamping action of the keys.

F represents a thin metal plate, which I usually attach at the bottom ofthe groove to one of the jaws, to cover the line of separation, and thusprevent scale, dust, or cinders from falling in.

The sliding jaw B is confined and guided laterally by being sunk in thebench-plank C,

it cannot lift at either end, in manner follow-- ing: The inner end isprovided with a stout tongue or tenon, T, which fits into and slideswithin a corresponding groove, mortise, or recess, U, formed in theinner end ofthe stationary jaw A, and that portion or depth of saidslidingjaw which is sunk into the bench-plank is prolonged, at J, so asto project beyond and overlap underneath the eccentric-cam M, whichoperates it, and which is secured to the bench by a stout pivot-bolt, N.The cam, besides forcing up the jaw B, in the act ot' upsetting, byproperly turning round the lever L, to which it is attached or locked,also, by means of a pin, p, inserted in the overlapping portion ot' thejaw, acting in an eccentric-groove, o, in the under side of said cam,draws back the jaw to its former position on reversing the motion of thecam and lever.

In order to reduce friction, I cast a chamber (open only toward the cam)in the portion marked b of the moving jaw, and place therein a metalroller, It, which turns, in close contact with said cam, on thepivot-bolt P.

This machine operates in the ordinary manner by heating a small portionof the tire to be upset and placing it in the groove on the concaveupper surface of the jaws A B, previously placed apart, as seen in thedrawings. rI lhe clamping-keys I I should have previously been liftedalmost out of the'slots and tipped over outwardly in such manner thatthe tire, while being placed in position, will strike against the edgesand straighten them up, when they will fall by their own gravity intoplace. A smart blow wit-h a hammer on the end of each key will now dogthe tire to each jaw, and the operator, seizing the lever L, turns itand the cam round in a proper direction, and thus, through the mediumofthe anti-friction roller It, pivoted on the jaw B,compelsit toapproach the jaw A, and thus 'upsets or shortens the hot metal betweenthe clamped points as much as may be deemed necessary, when theclampingkeys are driven back and the lever turn in a reverse direction,which motion, through the instrumentality ofthe eccentric-groove andthepin previously described,brin gs back the jaw B to its former position,ready for the next operation.

The bench-plank C may be mounted on legs (not shown) in the usual way,or framed into or attached to the building in any convenient positionfor use.

In this class of machines the line of resistance, or where the tire isclamped, is naturally and usually above the point where the pressure isapplied to the jaw to move it. This causes a tendency to lift, whichmust be resisted by devices which hitherto have proved defective or ofsuch a character as to require expensive machine-fitting andmultiplicity of part-s.

In my arrangement it will be seen that the cam pivot-bolt N iseffectually tied to the fast jaw A (so that it cannot spring) by meansof the forked stays S S, which are looped under the bolt-nut and branchofi' on each side of the jaws, and are looped and secured by theholding-down bolts, which pass through Ithe side ears of the stationaryjaw.

The tongue T and groove U eectually secure the movable jaw at its innerend, and the prolongation J of its outer end is confined between theunder side of the cam and the bottom and sides of the sunken recess orgroove in 'the bench-plank G. Thus the parallelism of the jaws isrigidly preserved by the simple modification and arrangement of theoperating parts.

The utility of these machines for upsetting wheel-tire (when it hasbecome too large for the wheel) in place of cutting and rewelding hasbeen fully demonstrated, and nothing remains but to so simplify theirconstruction and cheapen their oost that they can be readily made in anyvillage where there is a foundry and blacksmiths shop, which is theobject of my invention.

I do not claim upsetting Wheel-tire by clamping it to jaws that areforced together, for all of the numerous machines with which I amfamiliar operate substantially in this way; but

What I claim, and desire to secure by Letters Patent, is

The combined arrangement of the clamping and upsetting jaws A B,cam-lever M L, antifriction roller It, and stays S S, constructed andconnected substantially as described, and the several parts arrangedrelatively with each otheran d with the bench-plank C or other bedsill,in the manner and for the purpose herein specified.

HIRAM L. HOVARD.

Witnesses: Y Or'ro L. JOHNSON, GEORGE JoHNsoN.

